174 THe MIcROSCcOPE. 
Thin sections are transferred from one slide or vessel to 
another by floating, by lifters, and by camel-hair brushes. 
Sections are floated in some liquid from one vessel to an- 
other, or from one part of a slide to another, without injury, 
especially when a camel-hair brush is used as a guide. 
To transfer with a brush, it is only necessary to dip the 
brush under the section and raise it out of the liquid. The sec- 
tion will rest over the brush without injuring it in the least. 
As the brush is lowered in another liquid, the section will float 
free. 
If it is desired to transfer the section from the brush to a 
drv slide, then the mcst dependent part of the section is allowed 
to come in contact with the glass, when the brush is revolved 
on its long axis away from that part of the section in contact 
with the slide. After a little practice this will be found to be 
the most satisfactory method of transferring a section to a slide. 
Section lifters are useful in transferring sections from one 
liquid to another. 
If it is desirable to mount the section in some watery me- 
dium, it is necessary to have a ring or cell upon the slide. 
The cell may be made of a variety of things, as glass, wax, etc. 
For general work, however, it will be found that white 
zinc, Brunswick black, and gold size, answer every pur- 
pose. The slide is placed upon the turn-table and centered ; 
and with a sable brush a cell is made, a trifle smaller than the 
diameter of the cover, so that the edge of the cover is in the 
center of the ring of cement. A number of these cells can be 
kept on hand, and when one is wanted for use, it is only neces- 
sary to apply a little fresh cement to the outer half of the ring, 
in order that the cover may adhere to it at once. After the 
specimen has been placed in the cell with the mounting fluid, 
and the cover applied, another ring is spun around the edge of 
the cover, in order to seal up the cell. 
The reader is referred to Part III. of the work entitled 
** Microscopical Diagnosis ” for a more complete description of 
the various methods of making cells. 
To mount in a cell it is only necessary to use care that the 
mounting medium just fills the cell. After letting down the 
cover, if any of the mounting medium overflows, it must be 
